Home / 5,636.40-7,776.52-3,397.76

Finding the Fourth Proportional to 5,636.40, 7,776.52 and 3,397.76

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Solution

The fourth proportional to 5,636.40, 7,776.52 and 3,397.76 is: 4,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.40 : 7,776.52 = 3,397.76 : x
  2. Step 2: Convert to fraction form
    5,636.40/7,776.52 = 3,397.76/x
  3. Step 3: Cross multiply
    5,636.40x = 7,776.52 × 3,397.76
  4. Step 4: Simplify right side
    5,636.40x = 26,422,748.60
  5. Step 5: Solve for x
    x = 26,422,748.60/5,636.40
  6. Step 6: Final answer
    x = 4,687.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.